The Freemax M Pro is a beautiful sub-ohm tank with colorful resin decoration of the Freemax family. It comes with optional 5ml/6ml juice capacity and 25mm diameter. The most obvious feature of the Freemax M Pro is that it adopts the innovative M Pro coil system, which comes with different kinds of mesh coils such as the Canthal single/dual/triple mesh coil. So it can support higher wattage output with much larger clouds.